CN202779533U - Molding device for producing nuclear power evaporator transition cone forging - Google Patents

Abstract

The utility model discloses a molding device for producing nuclear power evaporator transition cone forging and comprises a straight mandrel, a cone-cone-cone upper die and a cone-cone-cone sleeve. The straight saddle is arranged on the mandrel supporter. The cone-cone-cone sleeve is arranged on the straight mandrel. The cone-cone-cone upper die is arranged on the upper portion of the straight mandrel. The bottom surface of the cone-cone-cone upper die matches with the generatrix of the cone-cone-cone sleeve. The bottom surface of the cone-cone-cone upper die comprises three slopes connected with one another. A first slope is parallel to a third slope. A U-shaped groove is arranged between the first slope and a second slope. The cone-cone-cone sleeve comprises three cones connected with one another. A first cone is parallel to the generatrix of a third cone. A U-shaped groove is arranged between the second cone and the third cone. The molding device for producing nuclear power evaporator transition cone forging is characterized in that the problem of being hard to process the fillet formed by the cylinder and the cone in the cylinder-cone-cylinder forgings.

Description

Building mortion for the manufacture of nuclear power evaporator transition-cone forging

Technical field

The utility model relates to a kind of manufacturing equipment of large forgings, is specifically related to a kind of building mortion for the manufacture of nuclear power evaporator transition-cone forging.

Background technology

Nuclear power evaporator transition-cone forging is the forging that typically has " cylinder-circular cone-cylinder barrel shaped " feature, as shown in Figure 1, these forging characteristics are to be made of cylinder, circular cone, cylinder three parts, when circular cone outside diameter large (diameter is not less than 3000mm), wall thickness thicker (wall thickness is not less than 100mm), the forging forming difficulty is very large.

This nuclear power evaporator transition-cone forging has three kinds of forging methods at present:

1, is swaged into first the straight tube blank, then relies on oxygen blast and reaming to be swaged into the conical shell part, as shown in Figure 2.The critical process of this forging method is that oxygen blast forms taper.Make in this way, stock utilization is low, and the production cycle is long.

2, directly be swaged into the conical shell forging, as shown in Figure 3, will be with straight wall transition-cone directly to be swaged into without straight wall cone cylinder.Because this Forging Technology has increased many remaining pieces, thereby stock utilization is still very low.

3, adopt " post-cone-post " saddle to be shaped; The basic principle of this method is to make one to have the saddle 1 of " post-cone-post " feature and the upper anvil 2 that a cover has individual features, saddle 1 is set up on the saddle support 3, as shown in Figure 4, then blank 10 is enclosed within on " post-cone-post " saddle 1, upper anvil 2 is with certain drafts dabbing base 10, make blank 10 local reductions, pressed an anvil, " post-cone-post " saddle 1 drives blank 10 and rotates certain angle, then depresses an anvil, the dabbing base 10 so repeatedly, until reach the dimensional requirement of forging.

When adopting the method to be shaped, there is very large axial force, press apparatus is had than major injury, easily cause the overturning of saddle support 3 simultaneously.

The utility model content

Technical problem to be solved in the utility model provides a kind of building mortion for the manufacture of nuclear power evaporator transition-cone forging, and it can avoid in the forming process axial force to the injury of press apparatus.

For solving the problems of the technologies described above, the utility model for the manufacture of the technical solution of the building mortion of nuclear power evaporator transition-cone forging is:

Comprise straight saddle, cone-cone-cone patrix, cone-cone-tapered sleeve cylinder, straight saddle is set up on the saddle support; Be arranged with cone-cone-tapered sleeve cylinder on the straight saddle; Cone-cone-cone patrix is positioned at the top of straight saddle; Match with the bus of cone-cone-tapered sleeve cylinder in the bottom surface of cone-cone-cone patrix; The bottom surface of described cone-cone-cone patrix comprises three inclined-planes connected to one another, and the first inclined-plane and the 3rd inclined-plane are parallel to each other; The junction on described the first inclined-plane and the second inclined-plane is provided with U-shaped groove; Described cone-cone-tapered sleeve cylinder comprises three cone sections connected to one another, and the bus of the first cone Duan Yudi third hand tap section is parallel to each other; The junction of described the second cone Duan Yudi third hand tap section is provided with U-shaped groove.

The angle [alpha] on described the first inclined-plane ₁Determined by following formula:

${\mathrm{\&alpha;}}_1=\mathrm{arctg}(\mathrm{ctg\&beta;}+\frac{{\mathrm{<figure-callout\; id="1"\; label="l"\; filenames="HDA00002179992400021.png"\; state="\{\{state\}\}">l</figure-callout>}}_1+l_3}{{\mathrm{<figure-callout\; id="2"\; label="l"\; filenames="HDA00002179992400021.png"\; state="\{\{state\}\}">l</figure-callout>}}_2}\&CenterDot;\frac{1}{\sin \mathrm{\&beta;}})$

Wherein: l ₁Be the bus size of the large end cylindrical section of forging to be formed, the mm of unit;

l ₂Be the bus size of forging conical section to be formed, the mm of unit;

l ₃Be the bus size of forging small end cylindrical section to be formed, the mm of unit;

β is the angle between the bus of the bus of the large end cylindrical section of forging to be formed and conical section;

The angle [alpha] on described the second inclined-plane ₂Determined by following formula:

α ₂＝180°-α ₁-β

The two ends of described cone-cone-tapered sleeve cylinder are respectively arranged with flange.

The suffered axial force in described the first inclined-plane and the 3rd inclined-plane and with equal and opposite in direction and the opposite direction of the suffered axial force in the second inclined-plane.

Described the first cone section and the suffered axial force of third hand tap section and with equal and opposite in direction and the opposite direction of the second cone section suffered axial force.

The technique effect that the utility model can reach is:

The utility model arranges U-shaped groove at the machined surface of cone-cone-cone patrix and cone-cone-tapered sleeve cylinder respectively, in the process of post cone tubular forging forming, can form two fins at cylindrical section and conical section intersection, in the following process process, fin is processed, can form the fillet of cylindrical section and conical section intersection, need not to increase again wall thickness and forge surplus, thereby solve the unmanageable problem of fillet of post cone tubular forging middle cylindrical section and conical section intersection.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the schematic diagram of nuclear power evaporator transition-cone forging;

Fig. 2 to Fig. 4 is the schematic diagram of three kinds of forging methods of prior art nuclear power evaporator transition-cone forging;

Fig. 5 is that the utility model is for the manufacture of the schematic diagram of the building mortion of nuclear power evaporator transition-cone forging;

Fig. 6 is the schematic diagram of cone-cone of the present utility model-cone patrix;

Fig. 7 is the schematic diagram of cone-cone of the present utility model-tapered sleeve cylinder;

Fig. 8 is the schematic diagram that nuclear power evaporator transition-cone forging is carried out following process;

Fig. 9 is stressed schematic diagram of the present utility model.

Description of reference numerals among the figure:

1 is saddle, and 2 is upper anvil,

3 is saddle support, and 6 is straight saddle,

7 are cone-cone-cone patrix, and 8 are cone-cone-tapered sleeve cylinder,

10 is workpiece,

30 is the conical shell workpiece, and 71 is the first inclined-plane,

72 is the second inclined-plane, and 73 is the 3rd inclined-plane,

74 is U-shaped groove, and 81 is the first cone section,

82 is the second cone section, and 83 is the third hand tap section,

84 is flange, and 85 is U-shaped groove.

The specific embodiment

As shown in Figure 5, the utility model is for the manufacture of the building mortion of nuclear power evaporator transition-cone forging, for the manufacture of having " cylinder-circular cone-cylinder barrel shaped " feature, minimum diameter is not less than the forging of 3000mm, comprise straight saddle 6, cone-cone-cone patrix 7, cone-cone-tapered sleeve cylinder 8, straight saddle 6 is set up on the saddle support 3; Be arranged with cone-cone-tapered sleeve cylinder 8 on the straight saddle 6; Cone-cone-cone patrix 7 is positioned at the top of straight saddle 6; Match (namely the angle on each inclined-plane of bus of cone-cone-tapered sleeve cylinder 8 equates with the angle on each inclined-plane, bottom surface of cone-cone-cone patrix 7) with the bus of cone-cone-tapered sleeve cylinder 8 in the bottom surface of cone-cone-cone patrix 7;

As shown in Figure 6, the bottom surface of cone-cone-cone patrix 7 comprises that three inclined-planes 71 connected to one another, 72,73, the first inclined-planes 71 and the 3rd inclined-plane 73 are parallel to each other; The first inclined-plane 71 and the 3rd inclined-plane 73 suffered axial forces and with equal and opposite in direction and the opposite direction of the second inclined-plane 72 suffered axial forces; The junction on the first inclined-plane 71 and the second inclined-plane 72 is provided with U-shaped groove 74;

As shown in Figure 7, cone-cone-tapered sleeve cylinder 8 comprises that the bus of three cone section 81,82,83, the first cone sections 81 connected to one another and third hand tap section 83 is parallel to each other; The first cone section 81 and third hand tap section 83 suffered axial forces and with equal and opposite in direction and the opposite direction of the second cone section 82 suffered axial forces; The two ends of cone-cone-tapered sleeve cylinder 8 are respectively arranged with flange 84, and flange 84 is used for preventing forming process blank axial float on sleeve 8; The junction of the second cone section 82 and third hand tap section 83 is provided with U-shaped groove 85;

Because post cone tubular forging also needs to carry out following process after making shaping, as shown in Figure 8, pass through first roughing, forms at last the end-state of part; But because the fillet of cylindrical section and conical section intersection A, B is excessive, be difficult to processing, must increase the forging surplus of wall thickness;

The utility model arranges U-shaped groove at the machined surface of cone-cone-cone patrix 7 and cone-cone-tapered sleeve cylinder 8 respectively, in the process of post cone tubular forging forming, can form two fins at cylindrical section and conical section intersection A, B, in the following process process, fin is processed, can form the fillet of cylindrical section and conical section intersection, need not to increase again wall thickness and forge surplus, thereby solve the unmanageable problem of fillet of post cone tubular forging middle cylindrical section and conical section intersection.

As shown in Figure 8, the angle [alpha] on the first inclined-plane 71, the 3rd inclined-plane 73 ₁(the first inclined-plane 71 equates with the angle on the 3rd inclined-plane 73) determined by following formula:

${\mathrm{\&alpha;}}_1=\mathrm{arctg}(\mathrm{ctg\&beta;}+\frac{{\mathrm{<figure-callout\; id="1"\; label="l"\; filenames="HDA00002179992400021.png"\; state="\{\{state\}\}">l</figure-callout>}}_1+l_3}{{\mathrm{<figure-callout\; id="2"\; label="l"\; filenames="HDA00002179992400021.png"\; state="\{\{state\}\}">l</figure-callout>}}_2}\&CenterDot;\frac{1}{\sin \mathrm{\&beta;}})$

Wherein: l ₁Be the bus size of the large end cylindrical section of forging to be formed, the mm of unit;

l ₂Be the bus size of forging conical section to be formed, the mm of unit;

l ₃Be the bus size of forging small end cylindrical section to be formed, the mm of unit;

β is the angle (this angle equals the angle between the bus of the bus of small end cylindrical section and conical section) between the bus of the bus of the large end cylindrical section of forging to be formed and conical section;

α ₁Be the first inclined-plane 71 (or the 3rd inclined-plane 73) with horizontal line between the angle that becomes;

After the size of forging to be formed is determined, parameter l ₁, l ₂, l ₃, β namely determines;

The angle [alpha] on the second inclined-plane 72 ₂Determined by following formula:

α ₂＝180°-α ₁-β

α ₂Be the second inclined-plane 72 with horizontal line between the angle that becomes;

As shown in Figure 9, well-distributed pressure p equals the flow stress of material, and under arbitrary temperature, pressure p is normal value, can get:

-pl ₁cosα ₁+pl ₂cosα ₂-pl ₃cosα ₁＝0

Shown that by following formula in forming process, the axial force of 30 pairs of moulds 7 of blank gets final product homeostasis at mould inside, namely press can not be subject to responsive to axial force;

During use, conical shell workpiece 30 is placed on cone-cone-tapered sleeve cylinder 8, conical shell is carried out reaming, make the large end cone section closing in of conical shell become large newel post section, the small end cone section enlarging of conical shell becomes the small end shell of column, forms " post-cone-tubular forging " blank.

The utility model adopts cone-cone-cone patrix 7 and cone-cone with matching-tapered sleeve cylinder 8, in the forming process, cone-cone-cone the first inclined-plane 71 of patrix 7 and the 3rd inclined-plane 73 suffered axial forces and with equal and opposite in direction and the opposite direction of the second inclined-plane 72 suffered axial forces, thereby axial force is compensated, has avoided the injury of axial force to equipment.

The utility model is particularly useful for producing the forging of CPR nuclear power transition-cone forging, AP1000 nuclear power transition-cone forging, CAP1400 nuclear power transition-cone forging equal diameter larger-size " post-cone-tubular " feature.

Claims (5)

1. building mortion for the manufacture of nuclear power evaporator transition-cone forging is characterized in that: comprise straight saddle, cone-cone-cone patrix, cone-cone-tapered sleeve cylinder, straight saddle is set up on the saddle support; Be arranged with cone-cone-tapered sleeve cylinder on the straight saddle; Cone-cone-cone patrix is positioned at the top of straight saddle; Match with the bus of cone-cone-tapered sleeve cylinder in the bottom surface of cone-cone-cone patrix; The bottom surface of described cone-cone-cone patrix comprises three inclined-planes connected to one another, and the first inclined-plane and the 3rd inclined-plane are parallel to each other; The junction on described the first inclined-plane and the second inclined-plane is provided with U-shaped groove; Described cone-cone-tapered sleeve cylinder comprises three cone sections connected to one another, and the bus of the first cone Duan Yudi third hand tap section is parallel to each other; The junction of described the second cone Duan Yudi third hand tap section is provided with U-shaped groove.

2. the building mortion for the manufacture of nuclear power evaporator transition-cone forging according to claim 1 is characterized in that: the angle [alpha] on described the first inclined-plane ₁Determined by following formula:

${\mathrm{\&alpha;}}_1=\mathrm{arctg}(\mathrm{ctg\&beta;}+\frac{l_1+l_3}{l_2}\&CenterDot;\frac{1}{\sin \mathrm{\&beta;}})$

Wherein: l ₁Be the bus size of the large end cylindrical section of forging to be formed, the mm of unit;

l ₂Be the bus size of forging conical section to be formed, the mm of unit;

l ₃Be the bus size of forging small end cylindrical section to be formed, the mm of unit;

β is the angle between the bus of the bus of the large end cylindrical section of forging to be formed and conical section;

The angle [alpha] on described the second inclined-plane ₂Determined by following formula:

α ₂＝180°-α ₁-β。

3. the building mortion for the manufacture of nuclear power evaporator transition-cone forging according to claim 1, it is characterized in that: the two ends of described cone-cone-tapered sleeve cylinder are respectively arranged with flange.

4. the building mortion for the manufacture of nuclear power evaporator transition-cone forging according to claim 1 and 2 is characterized in that: the suffered axial force in described the first inclined-plane and the 3rd inclined-plane and with equal and opposite in direction and the opposite direction of the suffered axial force in the second inclined-plane.

5. the building mortion for the manufacture of nuclear power evaporator transition-cone forging according to claim 1 and 2 is characterized in that: described the first cone section and the suffered axial force of third hand tap section and with equal and opposite in direction and the opposite direction of the second cone section suffered axial force.

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